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Mamenchisaurus youngi stars in 'bird-like-threat-display'


Jurassic sauropod Mamenchisaurus youngi was a pretty freaky looking thing: a weird, upturned tail base; hugely oversize neck and massive shoulders. Here, one is shown engaging in a bird-like threat display: head and neck down, vocalising, and elevating its tail. The other is engaging in bird-like can't-be-botheredness.